Pesquisa | SciELO

Abstract The use of fungi and bacteria with pathogenic capacity towards insects is considered a sustainable agroecological alternative for efficient pest control, as they are microorganisms of easy production in industrial scale, formulation and use. Therefore, the objective was to evaluate four entomopathogenic formulations in the control of Brevicoryne brassicae L., a key pest of cabbage (Brassica oleracea L.), in a randomized complete block design with 4 treatments, plus an absolute control and 4 replicates. The variables evaluated were the number of dead and live aphids per plant and the number of infested plants. The commercial formulations Biosafe, BesT-K, Metarrizo and Yurak containing strains of Bacillus subtilis, Bacillus thuringiensis var kurstaki (Btk), Metarhizium anisopliae and Bauveria bassiana respectively, are the ones that were used by spray application to the crop in two seasons: planting, season August-December 2019 and August-December 2021. Among the results, M. anisopliae was recorded with up to 91.11 % efficiency, followed by B. bassiana with 89.50 % and Bs with 79.38 % in the reduction of populations under field conditions. In the laboratory, Btk and M. anisopliae reached 100 % mortality in a period of seven days, so it is concluded that in the medium term, entomopathogenic fungi in the field are more efficient in aphid control; however, in controlled conditions Btk is also efficient.

Resumen El uso de hongos y bacterias con capacidad patogénica hacia los insectos se considera una alternativa agroecológica sostenible de lucha eficiente contra las plagas por ser microorganismos de fácil producción en escala industrial, formulación y uso; entonces, el objetivo ha sido evaluar cuatro formulados entomopatógenos en el control de Brevicoryne brassicae L, plaga clave de la col (Brassica oleracea L.), en diseño de bloques completos al azar de 4 tratamientos, sumado un testigo absoluto y 4 réplicas, siendo las variables evaluadas la cantidad de pulgones muertos y vivos por planta y cantidad de plantas infestadas. Los formulados comerciales Biosafe, BesT-K, Metarrizo y Yurak que contenían cepas de Bacillus subtilis, Bacillus thuringiensis var kurstaki (Btk), Metarhizium anisopliae y Bauveria bassiana, respectivamente, son los que fueron utilizados mediante la aplicación por aspersión al cultivo en dos épocas de siembra, temporada agosto-diciembre 2019 y agosto-diciembre 2021. Entre los resultados se registró al M. anisopliae con hasta 91,11 % de eficiencia, seguida por B. bassiana con 89,50 % y Bs con 79,38 % en la reducción de las poblaciones en condiciones de campo; en laboratorio el Btk y M. anisopliae alcanzaron el 100 % de mortalidad en un lapso de siete días, por lo que se concluye que a mediano plazo los hongos entomopatógenos en campo resultan ser más eficientes en el control del pulgón, sin embargo, en condiciones controladas el Btk también es eficiente.

https://doi.org/10.29166/siembra.v11i1.4994

INSPECCIÓN DE SUBESTACIONES ELÉCTRICAS: YOLOV5 EN LA IDENTIFICACIÓN DE PUNTOS CALIENTES MEDIANTE IMÁGENES TÉRMICAS
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Pérez-Aguilar, Daniel A

; Pérez-Aguilar, Jair M.

; Pérez-Aguilar, Andy P.

; Risco-Ramos, Redy H

; Malpica-Rodríguez, Manuel E

Ingenius. Revista de Ciencia y Tecnología

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Jun 2024, Nº 31 Páginas 43 - 54

Resumo: En Es | Texto: En Es | PDF: En | PDF: Es

Abstract Substations are key facilities within an electrical system, untimely failures tend to cause low quality and negative effects on the electrical supply. An early indicator of potential electrical equipment failure is the appearance of hot spots; therefore, its detection and subsequent programmed correction avoids incurring in major failures and unnecessary operation stops. In this research, 64 experiments of the YOLOv5 algorithm were carried out, with the purpose of proposing an automated computer vision mechanism for the detection of hot spots in thermal images of electrical substations. The best results show a mAP value of 81.99%, which were obtained with the YOLOv5m algorithm and the transfer learning application. These results leave a basis to deepen and improve the performance of the algorithm by varying other hyperparameters to those considered in this study.

Resumen Las subestaciones son instalaciones clave dentro de un sistema eléctrico; las fallas intempestivas tienden a causar baja calidad y efectos negativos del suministro eléctrico. Un indicador temprano de posibles fallas en los equipos eléctricos es la aparición de puntos calientes; por lo que su detección y posterior corrección programada evita incurrir en fallas mayores y paradas de operación innecesarias. En esta investigación se realizaron 64 experimentos del algoritmo YOLOv5, con la finalidad de proponer un mecanismo automatizado de visión por computadora para la detección de puntos calientes en imágenes térmicas de subestaciones eléctricas. Los mejores resultados muestran un valor mAP de 81,99 %, los cuales se obtuvieron con el algoritmo YOLOv5m y la aplicación de transfer learning. Estos resultados dejan una base para profundizar y mejorar el desempeño del algoritmo, variando otros hiperparámetros a los considerados en el presente estudio.

https://doi.org/10.17163/ings.n31.2024.04

Detection of 16SrIV-A phytoplasma DNA in Colpoptera sp. (Hemiptera: Nogodinidae) insects in Yucatan Peninsula, Mexico
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Fernández-Barrera, M.

; Córdova-Lara, I.

; Chan-Rodríguez, J. L.

; Castillo-Vera, A.

; Blanco-Rodríguez, E.

; Nic-Matos, G.

; Oropeza-Salín, C.

; Sáenz-Carbonell, L.

Brazilian Journal of Biology

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2024, Volume 84 elocation e257470

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

Resumo O amarelecimento letal (LY) é uma doença que afecta o coqueiro e outras espécies de palmeiras. Está associada a fitoplasmas do grupo 16SrIV e o único vector de insectos notificado até agora para este patogéneo é o Haplaxius crudus. O H. crudus está presente no México e foi associado aos fitoplasmas do grupo 16SrIV, no entanto, não foi detectável durante um surto de LY na costa de Yucatan, México, sugerindo a existência de outras espécies de vectores. Para testar esta hipótese foi realizado um levantamento de insectos e um total de 3074 insectos foram capturados durante um ano de amostragem mensal. Dez ordens taxonómicas foram identificadas nesta amostra, sendo Hemiptera a mais abundante (N=2094), e estas foram classificadas em nove famílias. A colpoptera sp. da família Nogodinidae era a mais abundante, representando 56% do número total de insectos amostrados e 23% destas amostras resultaram positivos para o fitoplasma LY por detecção por PCR. A comparação BLAST, RFLP virtual e análises filogenéticas dos amplicons sequenciados relacionam o fitoplasma detectado com o subgrupo 16SrIV-A. Os resultados aqui apresentados sugerem que Colpoptera sp. poderia ser considerado como um novo vector putativo dos fitoplasmas causadores de LY no México e um candidato a investigação adicional.

Abstract Lethal yellowing (LY) is a disease that affects coconut and other palm species. It is associated to phytoplasmas of the group 16SrIV and the only reported insect vector for this pathogen so far is Haplaxius crudus. H. crudus is present in Mexico and has been associated to 16SrIV phytoplasmas, however, it was not detectable during a LY outbreak in the coast of Yucatan, Mexico, suggesting the existence of other vector species. To test this hypothesis a survey of insects was carried out and a total of 3074 insects were captured during a year of monthly sampling. Ten taxonomic orders were identified in this sample, Hemiptera being the most abundant (N=2094), and these were classified into nine families. The leafhopper Colpoptera sp. from to the Nogodinidae family was de most abundant representing 56% of the total number of insects sampled and 23% of these samples resulted positive for LY phytoplasma by PCR detection. The BLAST comparison, virtual RFLP and phylogenetic analyses of the sequenced amplicons relate the detected phytoplasma to the subgroup 16SrIV-A. The findings presented herein suggest that Colpoptera sp. could be considered as a new putative vector of the LY-causing phytoplasmas in Mexico and a candidate for further research.

https://doi.org/10.1590/1519-6984.257470

Ixodicidal effect of extracts from Cordia boissieri, Artemisia ludoviciana and Litchi chinensis on Rhipicephalus (Boophilus) microplus (Acari: Ixodidae)
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García-Ponce, R.

; Hernández-Escareño, J. J.

; Cruz-Valdez, J. C.

; Galindo-Rodríguez, S. A.

; Heya, M. S.

; Villarreal-Villarreal, J. P.

Brazilian Journal of Biology

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2024, Volume 84 elocation e264425

Resumo: En Pt | Texto: En Pt | PDF: En | PDF: Pt

Abstract The ixodicidal activity of the methanolic extracts of Artemisia ludoviciana (Astereceae), Cordia boissieri (Boraginaceae) and Litchi chinensis (Sapindaceae) against two field populations of Rhipicephalus (Boophilus) microplus from the state of Nuevo Leon (NL) and Veracruz (VER) was evaluated. The extract of L. chinensis in the concentration of 150 mg/ml showed efficacies of 100% and 99% against engorged females and mortalities of 98% and 99% against larvae. C. boissieri in the same concentration showed efficacies of 71% and 37% against engorged adults and mortalities of 33.04% and 10.33% against larvae and A. ludoviciana had efficacies of 94% and 83% in adults and mortalities of 89.39% and 89.21% against larvae in both populations respectively. The enzymatic activity of Acetylcholinesterase (AChE), Carboxylesterase (CaE), Glutathione-S-Transferase (GST) and Alkaline Phosphatase (ALP) was measured in both populations of ticks. As a result, a significant difference between both populations was shown, being the VER population the one that exhibited a higher enzymatic activity (p ≤ 0.05). It can be concluded that the methanolic extract of the seed of L. chinensis shows potential ixodicidal activity and can be used as an alternative source of tick control, however, prior characterization, toxicity and formulation studies are necessary.

Resumo No presente trabalho, a atividade ixodicida de extratos metanólicos de Artemisia ludoviciana (Astereceae), Cordia boissieri (Boraginaceae) e Litchi chinensis (Sapindaceae) contra Rhipicephalus (Boophilus) microplus foi avaliada em duas populações de campo nos estados de Nuevo León (NL) y Veracruz (VER). O extrato de L. chinensis na concentração de 150 mg/ml, apresentou eficácia de 100% e 99% contra fêmeas ingurgitadas, e taxas de mortalidade de 98% e 99% contra larvas. C. boissieri, na mesma concentração, apresentou eficácia de 71% e 37% contra adultas ingurgitados, e taxas de mortalidade de 33,04% e 10,33% contra larvas e A. ludoviciana apresentou eficácias de 94% e 83% em adultos e mortalidade de 89,39% e 89,21% contra larvas em ambas as populações respectivamente. Por outro lado, a atividade enzimática da Acetilcolinesterase (AChE), Carboxilesterase (CaE), Glutationa-S-Transferase (GST) e Fosfatase Alcalina (ALP) foi medida em ambas as populações de carrapatos. Como resultado, foi apresentada uma diferença significativa entre as populações, sendo a população VER a que apresentou maior atividade enzimática (p ≤ 0,05). Assim, pode-se concluir que o extrato metanólico da semente de L. chinensis apresenta potencial atividade ixodicida e pode ser utilizado como fonte alternativa de controle de carrapatos, porém estudos prévios de caracterização, toxicidade e formulação são necessários.

https://doi.org/10.1590/1519-6984.264425

Putting the Pacific fat sleeper Dormitator latifrons (Pisces: Eleotridae) to sleep: effects of clove oil and lidocaine anesthetic
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Aréchiga-Palomera, M. A.

; Figueroa-Salazar, A. G.

; Nieves-Rodríguez, K. N.

; Nolasco-Soria, H.

; Guerrero-Galván, S. R.

; Badillo-Zapata, D.

; Vega-Villasante, F.

Brazilian Journal of Biology

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2024, Volume 84 elocation e271624

Resumo: En Pt | Texto: En Pt | PDF: En | PDF: Pt

Abstract Among the different handling techniques in aquaculture, the use of anesthetics has had a growing interest focused on guaranteeing animal welfare, and reducing possible stress situations during general handling. The aim of this study was to present the use of eugenol and lidocaine with non-invasive anesthesia procedures in Dormitator latifrons, in which the different stages of anesthesia (induction and recovery) were determined. One hundred and twenty healthy fish of average weight of 73.59 ± 13.53 g and standard length of 17 ± 1.36 cm were used. The experimental fish were subjected to fasting for 24 h prior to the tests. Five fish were subjected to eugenol (25, 50, 100, and 200 µL/L), and lidocaine (100, 200, 300, and 400 mg/L), in triplicate. The time to reach deep and recovery anesthesia were recorded and the data analyzed using ANOVA (α= 0.05). Organisms exposed to anesthetics evidenced early episodes of fast, short-distance swimming (initial hyperactivity) for short periods of time. Survival was 100% with both compounds and concentrations. Fish exposed to a eugenol concentration of 200 µL/L had longer anesthesia times and took longer time to recover (P<0.05). The most effective concentrations for eugenol and lidocaine were of 200 µL/L and 400 µL/L in juvenile fish, promoting rapid inductions, without compromising the conditions for the recovery of the fish. This work provides practical information for handling and transportation D. latiforns with the least possible stress and ensuring animal welfare.

Resumo Dentre as diferentes técnicas de manejo na aquicultura, o uso de anestésicos tem despertado interesse crescente voltado para a garantia do bem-estar animal, reduzindo possíveis situações de estresse durante o manejo geral. O objetivo deste estudo foi apresentar o uso de eugenol e lidocaína com procedimentos anestésicos não invasivos em Dormitator latifrons, nos quais foram determinadas as diferentes etapas da anestesia (indução e recuperação). Foram utilizados 120 peixes saudáveis, com peso médio de 73,59 ± 13,53 g e 17 ± 1,36 cm de comprimento, em jejum de 24 horas antes dos testes. Cinco peixes foram submetidos a eugenol (25, 50, 100 e 200 µL/L) e lidocaína (100, 200, 300 e 400 mg/L), em triplicata. O tempo para atingir a anestesia profunda e de recuperação foi registrado, os dados foram analisados com ANOVA (α= 0,05). Organismos expostos a anestésicos evidenciaram episódios precoces de nado rápido de curta distância (hiperatividade inicial) por curtos períodos de tempo. A sobrevivência atinge 100% com ambos compostos e concentrações. Peixes expostos a uma concentração de eugenol de 200 µL/L tiveram tempos de anestesia mais longos e demoraram mais para se recuperar (P<0,05). As concentrações mais efetivas para eugenol e lidocaína foram de 200 µL/L e 400 µL/L em peixes juvenis, promovendo induções rápidas, sem comprometer as condições de recuperação dos peixes. Este trabalho fornece informações práticas para o manejo e transporte de D. latifrons com o mínimo de estresse possível e garantindo o bem-estar animal.

https://doi.org/10.1590/1519-6984.271624

Inoculation of Saccharomyces cerevisiae with sugar cane juice as a starter culture in coffee (Coffea arabica) fermentation
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Ladino-Garzon, Wilmer L.

; Barrios-Rodríguez, Yeison F.

; Amorocho-Cruz, Claudia M.

Revista Brasileira de Engenharia Agrícola e Ambiental

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2024, Volume 28 Nº 1 elocation e272094

Resumo: En Pt | Texto: En Pt | PDF: En | PDF: Pt

ABSTRACT This study aims to evaluate the effect of sugarcane juice and the addition of commercial yeast Saccharomyces cerevisiae var. bayanus (≥ 1 × 1010 cfu/g) during the fermentation of coffee to the beverage’s sensory characteristics and the coffee bean’s chemical composition. A completely randomized experimental design with two replicates is carried out for four treatments, distributed as follows: i) water addition (0.78 kg), ii) sugar cane juice addition (0.78 kg), iii) sugar cane juice addition (0.78 kg) combined with yeast Oenoferm® Freddo (0.12 g) and iv) sugar cane juice addition (0.78 kg) combined with yeast Oenoferm® Color (0.12 g). After fermentation and drying, the samples were subjected to medium roasting and analyzed using infrared spectroscopy and sensory analysis according to the methodology of the Specialty Coffee Association. The implementation of organic additives directly affected the attributes and sensory notes, allowing coffee to be classified as a specialty coffee with a score above 80 points. Adding sugar cane juice or a combination of sugar cane juice and Saccharomyces cerevisiae showed promising results in improving coffee beverage quality. Additionally, chemometric analysis of the infrared spectrum showed that the chemical characteristics of roasted coffee were affected, which correlated with the sensory results. The addition of cane juice only (T2) and the Oenoferm® Freddo yeast strain (T3) presented the best sensory quality.

RESUMO O objetivo deste estudo foi avaliar o efeito do caldo de cana-de-açúcar e da adição levedura comercial Saccharomyces cerevisiae var. bayanus (≥ 1 × 1010 cfu/g) durante a fermentação do café nas características sensoriais da bebida e na composição química do grão de café. Foi realizado um experimento completamente aleatório com duas repetições para quatro tratamentos, distribuídos da seguinte forma: i) adição de água (0.78 kg), ii) adição de caldo de cana-de-açúcar (0.78 kg), iii) adição de caldo de cana-de-açúcar (0.78 kg) combinado com a levedura Oenoferm® Freddo (0.78 kg) e iv) adição de caldo de cana-de-açúcar (0.78 kg) combinado com a levedura Oenoferm® Color (0.78 kg). Após fermentação e a secagem, as amostras sáo submetidas à torrefação média e analisadas por espectroscopia de infravermelho e análise sensorial de acordo com a metodologia da Specialty Coffee Association. A implementação de aditivos orgânicos afetou diretamente os atributos e as notas sensoriais, permitindo que o café fosse classificado como um café especial com uma pontuação acima de 80 pontos. A adição de suco de cana-de-açúcar ou de uma combinação de suco de cana-de-açúcar e Saccharomyces cerevisiae apresentou resultados promissores na melhorar da qualidade da bebida do cafe. Além disso, a análise quimiométrica do espectro infravermelho mostrou que as características químicas do café torrado foram afetadas, o que se correlacionou com os resultados sensoriais. A adição apenas de suco de cana (T2) e da cepa de levedura Oenoferm® Freddo (T3) apresentou a melhor qualidade sensorial.

https://doi.org/10.1590/1807-1929/agriambi.v28n1e272094

Caracterización de la salinidad en suelos de la planicie del río San Pedro, Nayarit, México
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Ortega-Escobar, Héctor Manuel

; Martínez-Rodríguez, Oscar Germán

; Can-Chulim, Álvaro

; Cruz-Crespo, Elia

; Bojórquez-Serrano, José Irán

; García-Paredes, Juan Diego

; Sánchez-Bernal, Edgar Iván

; Madueño-Molina, Alberto

; Mancilla-Villa, Oscar Raúl

Terra Latinoamericana

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Dez 2023, Volume 41 elocation e1606

Resumo: En Es | Texto: En Es | PDF: En | PDF: Es

Summary: The floodplain of the San Pedro River, a fluvial-delta formation, is one of the coastal areas affected by marine intrusion during the last glaciation. In this region, agriculture is the main economic activity; however, intensive agricultural practices, the geological past, current interactions with the marine system and the transport of salts through sediments and water make this area susceptible to soil salinization. To characterize the salinity of the agricultural area of the San Pedro River floodplain, two soil samplings were carried out at 91 sites over a period of two years. Samples were taken from depths of 0.0 to 0.3 m and from 0.0 to 0.1 m to depths of 1 m and 3 m. Fifty groundwater samples were collected. Saturation extracts were obtained (1: θsat) from the soil samples. For the soil and groundwater extracts, the pH, EC, and major cations and anions were determined, the sodium adsorption ratio was calculated in the original and adjusted formulations (SAR or and SAR adj ), and the exchangeable sodium percentage (ESP) was ascertained. The pH, EC and SAR or of the groundwater ranged from 6.94 to 8.37, 199 to 4660 µS cm-1 and 0.16 to 32.30 (mmolc L-1)1/2, while in the saturation extracts, the pH, EC and SAR or ranged from 4.81 to 8.58, 0.08 to 72.4 dS m-1 and 0.11 to 33.09 (mmolc L-1)1/2, respectively. The salinity problems in the study area are closely related to the intrusion of salts from the marine system.

Resumen: La planicie del río San Pedro, que tiene una formación fluvio-deltaica, es una de las superficies costeras que fueron afectadas por la intrusión marina durante la última glaciación. En esta zona, la agricultura es la principal actividad económica, sin embargo, las actividades agrícolas intensivas, su pasado geo-morfológico, la actual interdependencia con el sistema marino y el transporte de sales a través de los sedimentos y aguas, hacen que esta región sea susceptible a la acumulación de sales en los suelos. Con el objetivo de caracterizar la salinidad de la superficie agrícola de la planicie del río San Pedro, se hicieron dos muestreos de suelos en 91 sitios en un periodo de dos años. Se tomaron muestras de 0.0 a 0.3 m y de 0.0 a cada 0.1 m hasta profundidades de 1 m y 3 m. Se recolectaron 50 muestras de agua freática, además se obtuvieron extractos de saturación (1: θsat) de las distintas muestras de suelos. A los extractos de suelo y aguas freáticas, se les determinó el pH, CE, cationes y aniones mayoritarios, se calculó el parámetro relación de adsorción de sodio en su formulación original y ajustada (RAS or , RAS aj ) y el porciento de sodio intercambiable (PSI). El pH, CE y RAS or del agua freática estuvieron dentro de los intervalos de 6.94-8.37, 199-4660 µS cm-1 y 0.16-32.30 (mmolc L-1)1/2, mientras que en los extractos de saturación entre 4.81-8.58, 0.08-72.4 dS m-1 y 0.11-33.09 (mmolc L-1)1/2 respectivamente. Los problemas de salinidad en la zona de estudio están estrechamente relacionados con la intrusión de sales provenientes del sistema marino.

https://doi.org/10.28940/terra.v41i0.1606

Tratamiento quirúrgico de un teratoma intracardiaco en un paciente de 66 años de edad. Reporte de caso
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Lacy-Niebla, M. Carmen

; Rodríguez-Echeverría, Gabriela

; Gómez-Soto, Carmen L.

Archivos de cardiología de México

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Dez 2023, Volume 93 Nº 4 Páginas 530 - 532

Resumo: Es | Texto: Es | PDF: Es

https://doi.org/10.24875/acm.23000004

Evaluation of an automatized AMBU ESSI-1 INC designed at the Instituto Nacional de Cardiología Ignacio Chávez
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Abundes-Velasco, Arturo

; Sánchez-Pérez, Efraín

; Jiménez-Rodríguez, Gian M.

; Molina-Méndez, Francisco J.

; Herrera-Elizalde, Rafael

; Pulido-Zamudio, Tomás

; Álvarez-Rosales, Humberto

; Villegas-Juache, Juan

; Aceves-Díaz-González, Sebastián

; Parra-Rodríguez, David A.

; Cruz-Enríquez, Francisco J.

; Cobos-Reyes, Farid A.

; Aguilar-Torres, Eduardo A.

; Islas-Navarro, Enid A.

; Nuñez-Gómez, José C.

; Peña-Duque, Marco A.

Archivos de cardiología de México

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Dez 2023, Volume 93 Nº 4 Páginas 391 - 397

Resumo: Es En | Texto: Es En | PDF: Es | PDF: En

Resumen Objetivo: Evaluar un dispositivo automatizado para la asistencia ventilatoria basado en un AMBU manufacturado en Marzo del 2020. Métodos: El ESSI-1 INC fue evaluado por medio de parámetros fisiológicos y mecánica pulmonar a través de pruebas de espirómetro compensatorios (TISSOT); pulmón artificial (Modelo 5600i Dual Adult PNEU VIEW SYSTEM); así como su desempeño comparado a la máquina de anestesia (AEONMED 7500) en modelos porcinos, midiendo criterios ventilatorios, hemodinámicos y gasométricos. Resultados: Este equipo (ESSI-1 INC) fue exitosamente probado por modelos mecánicos y biológicos, tales como cerdos donde su desempeño fue evaluado en términos de la variabilidad del volumen tidal, frecuencia ventilatoria, y relación I/E versus el desempeño manual de dos médicos. Todos los resultados finalizaron como se esperaba de forma satisfactoria. Conclusiones: Es un equipo seguro y efectivo, el cual debería ser probado y usado en distintas condiciones clínicas para estandarizar la seguridad ventilatoria y cuidado de pacientes que lo requieran.

Abstract Objective: The objectives of this study were to evaluate an automated device for ventilatory support based on AMBU manufactured in March 2020. Methods: The ESSI-1 INC was evaluated through pulmonary mechanics and physiology parameters through compensatory spirometer tests (TISSOTs), and an artificial lung Model5600i Dual Adult PNEU VIEW SYSTEM; it was also compared to the anesthetic ventilatory support equipment (AEONMED 7500) in porcine models, measuring ventilatory, hemodynamic and gasometric parameters. Results: This equipment (ESSI-1 INC) was successfully tested by mechanical and biological models, such as pigs in which its performance was evaluated in terms of variability of tidal volume, ventilation frequency, and I/E relationship versus the manual performance of two medical interns. All the results turned out as expected and were satisfactory. Conclusions: It is safe and effective equipment and should be tested and used in diverse clinical conditions to standardize the ventilatory safety and care of patients who require it.

https://doi.org/10.24875/acm.2200004

10.

Third National Registry of Cardiac Rehabilitation Programs in Mexico (RENAPREC III-2022)
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Lara-Vargas, Jorge A.

; Ilarraza-Lomelí, Hermes

; García-Saldivia, Marianna

; Pineda-García, Alfredo D.

; Leyva-Valadez, Eduardo A.

; Justiniano-Cordero, Samuel

; Sahagún-Olmos, Roberto

; Zavala-Ramírez, Juana

; Cassaigne-Guasco, María E.

; Sánchez-Limón, Edgar-F

; Castañeda-López, Javier

; Cerón-Enríquez, Norma

; Ku-González, Andrés

; Arteaga-Martínez, Rodolfo

; Hinojosa-López, Tania

; Vergara-Guzmán, Jéssica

; Pérez-Vázquez, Daniel I.

; Gasca-Zamudio, Pedro D.

; Aranda-Ayala, Zulema L.

; Vacío-Reyes, Martha E.

; Reza-Orozco, Marco

; Alcocer-Gamboa, Miguel A.

; Hernández-González, Pedro A.

; Pérez-Reyes, Angélica A.

; Núñez-Urquiza, Juan P.

; Alonso-Sánchez, Jesús

; Franco-Valles, Sarahí

; Romo-Escamilla, Ricardo E.

; Nuriulú-Escobar, Patricia

; Serna-Santamaría, Iván

; Avilés-González, Jorge

; Salgado-Solorio, María C.

; Muñoz-Gutiérrez, Luz M.

; Mendoza-Díaz, Pedro M.

; Ávila-Estrada, Ángel

; Morales-Medina, Carlos

; Lara-Vázquez, Eduardo

; Rodríguez-Herrera, Paulina

; Galván-López, María

; Segoviano-Mendoza, Georgina

; De-la-Torre-Cruz, Fabiola

; Jiménez-Campos, Cecilia

; Ramírez-Meléndez, Alejandra

; Almaraz-Ríos, Alejandro

; González-Bonilla, Mezthly

; Rojano-Castillo, Jessica

; Rius-Suarez, María D.

Archivos de cardiología de México

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Dez 2023, Volume 93 Nº 4 Páginas 405 - 416

Resumo: Es En | Texto: Es En | PDF: Es | PDF: En

resumen está disponible en el texto completo

Abstract Introduction: In Mexico, cardiac rehabilitation (CR) as an interdisciplinary intervention with therapeutic impact in patients with heart disease is growing. There is the need to know actual conditions of CR in our country. Objectives: The objective of this National Registry is to follow-up those existing and new CR units in Mexico through the comparison between the two previous registries, RENAPREC-2009 and RENAPREC II-2015 studies. This is a descriptive study focused on diverse CR activities such as assistance training, and certification of health professionals, barriers, reference, population attended, interdisciplinarity, permanence over time, growth prospects, regulations, post-pandemic condition, integrative characteristics, and scientific research. Results: Data were collected from 45 CR centers in the 32 states, 75.5% are private practice units, 67% are new, 33% were part of RENAPREC II-2015, and 17 have continued since 2009. With a better distribution of CR units along the territory, the median reference of candidates for CR programs is 9% with a significant reduction into tiempo of enrollment to Phase II admission (19 ± 11 days). Regarding to previous registries, the coverance of Phases I, II, and III is 71%, 100%, and 93%, respectively; and a coverance increases in evaluation, risk stratification, and prescription, more comprehensive attendance and prevention strategies. Conclusions: CR in Mexico has grown in the past 7 years. Even there is still low reference and heterogeneity in specific processes, there are strengths such as interdisciplinarity, scientific professionalization of specialists, national diversification, and an official society that are consolidated over time.

https://doi.org/10.24875/acm.22000235

11.

Cartografía de la co-creación de valor en estudios sobre la educación superior
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Ávila., Katty Loor

; Pedraza-Rodríguez., José Antonio

; Naranjo., Leonor M. Pérez

Revista San Gregorio

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Dez 2023, Volume 1 Nº 56 Páginas 171 - 193

Resumo: Es En | Texto: Es En | PDF: Es | PDF: En

Resumen La co-creación de valor en la educación superior es un concepto que se centra en el proceso de colaboración activa y participativa entre todos los actores involucrados en el sistema universitario, con la finalidad de generar valor de manera conjunta. La presente investigación tuvo como objetivo realizar una cartografía detallada del corpus de conocimiento relacionado con la co-creación de valor en la educación superior según estudios de la Web of Science entre el periodo 2012-2022. Se llevó a cabo una investigación de tipo descriptiva y retrospectiva, basado en la metodología de revisión sistemática exploratoria, en publicaciones seleccionadas según criterios de pertinencia y relevancia. Los resultados del análisis ayudaron a identificar tendencias y patrones de la co-creación de valor en el ámbito universitario, evidenciando que la calidad, la satisfacción y el compromiso son ejes emergentes entre los investigadores del campo y que estudian los procesos de creación conjunta de valor. La investigación propone algunos ámbitos de análisis y líneas de investigación especializada que pueden ser importantes abordar en futuros trabajos. Temas clave que emergen de la investigación con el propósito de fortalecer la gestión institucional de las universidades.

Abstract The co-creation of value in higher education is a concept that focuses on the process of active and participatory collaboration between all the actors involved in the university system, in order to generate value together. The objective of this research was to carry out a detailed mapping of the corpus of knowledge related to the co-creation of value in higher education according to studies of the Web of Science between the period 2012-2022. A descriptive and retrospective investigation was carried out, based on the exploratory systematic review methodology, in publications selected according to relevance and relevance criteria. The results of the analysis helped to identify trends and patterns of co-creation of value in the university environment, evidencing that quality, satisfaction and commitment are emerging axes among researchers in the field and who study the processes of joint creation of value. The research proposes some areas of analysis and lines of specialized research that may be important to address in future work. Key issues that emerge from research with the purpose of strengthening the institutional management of universities.

https://doi.org/10.36097/rsan.v1i56.2435

12.

Resultados auditivos con terapia combinada esteroidea para la hipoacusia neurosensorial súbita idiopática
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García-Rodríguez, Edgar A.

; Mancilla-Mejía, Francisco J.

; Dirzo-Cuevas, Silvia L.

; Hernández-Mundo, Abraham

; Méndez-Saucedo, Luis M.

Cirugía y cirujanos

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Dez 2023, Volume 91 Nº 6 Páginas 816 - 823

Resumo: En Es | Texto: En Es | PDF: En | PDF: Es

Abstract Background: Sudden Sensorineural Hearing Loss was described by Mc. Cabe in 1979 and, since then, many authors have tried to define, explain and correctly treat this disease. The National Institute on Deafness and Other Communication Disorders defines it as sudden sensorineural hearing loss of at least 30 dB in three contiguous audiometric frequencies in a period of 72 hours. Among the therapeutic strategies, corticosteroids have been shown to have the greatest benefit due to their anti-inflammatory and anti-cellular stress effects. Objective: To determine the hearing results with combined steroid therapy in patients with sudden sensorineural hearing loss (SSHL), according to the Siegel recovery criteria scale. Method: Study carried out in the otorhinolaryngology and head and neck surgery service of the Centro Médico Naval, Ciudad de México, where 150 patients diagnosed with SSHL and who received combined therapy with intratympanic dexamethasone and systemic prednisone were included. Results: Therapeutic effectiveness was demonstrated by correlating therapeutic success in 82% of cases and therapeutic failure in 18% of cases, by correlating it with the Siegel recovery criteria scale. When evaluating the general average of the pure tone average levels at the beginning and 6 weeks after treatment, a statistically significant difference was obtained (p = 0.001). The average of the speech audiometry at the beginning and 6 weeks later had a statistically significant difference (p = 0.001). Conclusions: Initial combined steroid treatment for SSHL has been shown to have beneficial results according to Siegel recovery criteria scale.

Resumen Antecendentes: La Hipoacusia Neurosensorial Súbita Idiopática fue descrita por Mc. Cabe en 1979 y, desde entonces, muchos autores han tratado de definir, explicar y tratar correctamente esta enfermedad. El Nacional Institute on Deafness and Other Communication Disorders la define como pérdida auditiva neurosensorial brusca de al menos 30 dB en tres frecuencias audiométricas contiguas en un periodo de 72 horas. Entre las estrategias terapéuticas, los corticosteroides han demostrado tener mayor beneficio por sus efectos antiinflamatorios y antiestrés celular. Objetivo: Determinar los resultados auditivos con la terapia de esteroides combinados en pacientes con hipoacusia neurosensorial súbita idiopática (HNSI), de acuerdo a la escala de criterios de recuperación de Siegel. Método: Estudio realizado en el servicio de otorrinolaringología y cirugía de cabeza y cuello del Centro Médico Naval, en Ciudad de México, en el que se incluyeron 150 pacientes con diagnóstico de HNSI y que recibieron terapia combinada con dexametasona intratimpánica y prednisona sistémica. Resultados: Se demostró una efectividad terapéutica al correlacionar el éxito terapéutico en el 82% de los casos y un fracaso terapéutico en el 18% de los casos según la escala de criterios de recuperación de Siegel. Al evaluar el promedio general de los niveles de promedio de tonos puros al inicio y 6 semanas posterior al tratamiento se obtuvo una diferencia estadísticamente significativa (p = 0.001). El promedio de las logoaudiometrías al inicio y 6 semanas posterior al tratamiento tuvo una diferencia estadísticamente significativa (p = 0.001). Conclusiones: El tratamiento combinado con esteroides de manera inicial para la HNSI ha demostrado tener resultados benéficos de acuerdo con la escala de criterios de recuperación de Siegel.

https://doi.org/10.24875/ciru.22000394

13.

Efectividad de la endoscopía en la implantación coclear
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Méndez-Saucedo, Luis M.

; Mancilla-Mejía, Francisco J.

; Serrano-Salinas, Laura

; Hernández-Mundo, Abraham

; Hernández-Alva, Tania M.

; Mejía-Ángeles, Marisol

; Camacho-Olivares, Miriam

; Aguilar-Vázquez, Sandra L.

; Salinas-Ángeles, Rocío

; Dirzo-Cuevas, Silvia L.

; García-Rodríguez, Edgar A.

; Bandala, Cindy

Cirugía y cirujanos

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Dez 2023, Volume 91 Nº 6 Páginas 824 - 828

Resumo: En Es | Texto: En Es | PDF: En | PDF: Es

Abstract Objective: Determine the effectiveness of endoscopy in cochlear implantation as compared to microscopy. Method: Study comparing microscopy and endoscopy in cochlear implant placement in 34 patients (23 endoscopic implants and 20 implants via microscopy), between 2014 and 2019, at the Centro Medico Naval, Mexico City. The study was performed under informed consent and according to the Council for International Organizations of Medical Sciences (CIOMS). Results: Of the 34 patients, 12 were children or adolescents and 22 were adults. The visualization of the round window classified via microscopy per St. Thomas Hospital’s classification showed that type IIB prevailed in 30.2% of patients, and type III in 41.9%, and when using the endoscope, the round window was observed in full in 82.6% of patients (type I), and type IIA was only observed in 17.4% (four patients). The number of attempts made to place the cochlear implant was greater with the microscope. The time to insertion of the electrode was 1.6 minutes. No differences were observed (p > 0.05) in the number of inpatient days. Cochleostomy was more frequent when using the microscope. Conclusions: Endoscopy is an effective resource in cochlear implantation for posterior tympanotomy, with no complications observed, offering greater safety in inserting the electrode through the round window.

Resumen Objetivo: Determinar la efectividad de la endoscopía en la implantación coclear en comparación con la técnica microscópica. Método: Se comparó la microscopía frente a la endoscopía en la colocación de implante coclear en 34 pacientes (23 endoscópicos y 20 microscópicos), del año 2014 al año 2019, en el Centro Médico Naval de la Ciudad de México. El estudio se realizó bajo consentimiento informado y apegado a las normas del Council for International Organizations of Medical Sciences. Resultados: De los 34 pacientes, 12 eran niños o adolescentes y 22 eran adultos. La visualización de la ventana redonda fue clasificada con microscopio según la clasificación del St. Thomas Hospital, predominando la tipo IIB (30.2%) y la III (41.9%), y al utilizar el endoscopio se observó completa en el 82.6% (tipo I) y tipo IIA en tan solo el 17.4% (cuatro pacientes). El número de intentos en la colocación del implante coclear fue mayor con el microscopio. El tiempo en el que se insertó el electrodo fue de 1.6 minutos. No hubo diferencias (p > 0.05) en la estancia hospitalaria. Fue más frecuente la cocleostomía cuando se uso el microscopio. Conclusiones: La endoscopía es un instrumento efectivo en la implantación coclear por timpanotomía posterior, sin presentarse complicaciones y dando mayor seguridad para insertar el electrodo por la ventana redonda.

https://doi.org/10.24875/ciru.21000908

14.

Fístulas enteroatmosféricas en abdomen abierto en trauma asociadas con la reintervención abdominal y la terapia VAC
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Rodríguez-Silverio, Jesús E.

; García-Núñez, Luis M.

; Hernández-García, Edgar F.

; Noyola-Villalobos, Héctor F.

; Moreno-Delagado, Luis F.

Cirugía y cirujanos

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Out 2023, Volume 91 Nº 5 Páginas 658 - 663

Resumo: Es En | Texto: Es En | PDF: Es | PDF: En

Resumen Introducción: El abdomen abierto es una alternativa para manejar al paciente traumatizado, y una variante para instituirlo es la terapia de presión negativa de la herida con el dispositivo VAC®. Aunque tiene ventajas técnicas, no está exento de riesgos y una complicación crítica es la formación de fístulas enteroatmosféricas (FEA). Objetivo: Analizar el papel de la duración de la terapia de presión negativa y del número de cambios del dispositivo VAC® sobre la aparición de FEA en pacientes traumatizados manejados con abdomen abierto. Método: Se establecieron puntos de corte con curva de características operacionales del receptor. Los valores se compararon con la prueba t de Student o U de Mann-Whitney, considerando p < 0.05 como valor estadísticamente significativo. Resultados: La FEA se presentó en 39 casos (5.9%). Hubo una diferencia significativa en la aparición de FEA en pacientes con duración de la terapia de presión negativa de la herida ≥ 11.2 días (46.9 vs 1.3%; riesgo relativo [RR]: 3.67; intervalo de confianza del 95% [IC95%]: 2.4-6.68; p = 0.017) y cuando se practicaron ≥ 2.6 cambios del dispositivo VAC® (34.6 vs. 0.5%; RR: 6.92; IC95%: 1.1-4.3; p < 0.001). Conclusiones: En nuestra institución, la práctica de más de tres cambios del dispositivo VAC® y el mantenimiento de la terapia por más de 11 días debe ser cuidadosamente considerado para reducir el riesgo de formación de FEA.

Abstract Background: Open abdomen is an alternative for the management of trauma patient, and negative pressure therapy of the wound using VAC® device is a genuine sort of treatment. Although the device poses technical advantages, risks are present and a critical complication is the enteroatmospheric fistula formation (EAF). Objective: To analize the role of negative pressure therapy length and VAC® device number of changes on the EAF formation in trauma patients udergoing open abdomen. Method: Cut-off points were calculated using receiver operational characteristics curve. Values were compared with Student's t or Mann-Withney U tests, considering statistically significant p < 0.05. Results: EAF were present in 39 cases (5.9%). A significant difference in the presence of EAF was present in patients with negative pressure therapy of the wound length ≥ 11.2 days (46.9 vs. 1.3%; relative risk [RR]: 3.67; 95% confidence interval [95% IC]: 2.4-6.68; p = 0.017) and when ≥ 2.6 VAC® device changes were performed (34.6 vs. 0.5%; RR: 6.92; 95% IC: 1.1-4.3; p < 0.001). Conclusions: At our institution, the practice of >3 VAC® device changes and length of therapy > 11 days should be carefully considered leading to reduce the risk of EAF formation.

https://doi.org/10.24875/ciru.22000419

15.

Diversidad y estructura de especies arbóreas en localidades rurales de Hualahuises, México
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Molina Guerra, Víctor Manuel

; Alanís Rodríguez, Eduardo

; Mora Olivo, Arturo

; Rubio Camacho, Ernesto A.

; González Cuellar, Andrés Tzolkin

Revista mexicana de ciencias forestales

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Out 2023, Volume 14 Nº 79 Páginas 344 - 354

Resumo: Es En | Texto: Es En | PDF: Es | PDF: En

Resumen En este estudio se evaluó la proporción de especies arbóreas nativas respecto a las introducidas en bosques urbanos de seis zonas rurales de Hualahuises, Nuevo León (noreste de México). Para el análisis de varianza se utilizó la prueba de proporciones con un nivel de confianza de 0.95 mediante el comando prop.test en R. Se registraron 252 individuos de 32 especies distribuidas en 29 géneros y 19 familias. La familia Fabaceae fue la mejor representada con siete especies. De todos los taxones, 19 son nativos (59.37 %) y 13 introducidos (40.63 %). De acuerdo con su origen, 77.79 % de los individuos son nativos y 22.21 % introducidos. Referente a sus dimensiones, las diferencias porcentuales son mayores: las nativas representan 91.69 % de área basal, 92.36 % de área de copa, 92.22 % de área superficial de la copa y 96.78 % de volumen de copa, mientras que las no nativas presentan valores inferiores a 9.00 %. Prosopis laevigata, seguida de Vachellia farnesiana y Ebenopsis ebano presentaron los valores estructurales más altos. Las tres son nativas pertenecientes a la familia Fabaceae y juntas conforman 44.05 % de la abundancia y 63.71 % del Índice de Valor de Importancia Urbano. Con base en el análisis de varianza, las especies nativas resultaron tener mayores valores de riqueza, área basal y área superficial de copa que las introducidas en las localidades evaluadas.

Abstract In this study, the proportion of native vs. introduced tree species in urban forests of six rural areas of Hualahuises, Nuevo León (Northeast Mexico) was evaluated. For the analysis of variance, the proportions test was used with a confidence level of 0.95 through the prop.test command in R. 252 individuals of 32 species distributed in 29 genera and 19 families were recorded. The Fabaceae family was the largest represented with seven species. Of the 32 species, 19 are native (59.37 %) and 13 introduced (40.63 %). Based upon their origin, 77.79 % of the individuals are native and 22.21 % introduced. Regarding their dimensions, the percentage differences are greater: the native ones represent 91.69 % of the basimetric area, 92.36 % of the crown area, 92.22 % of the assumed crown area and 96.78 % of crown volume, while the non-natives present values lower than 9.00 %. At the species level, those with the highest structural values were Prosopis laevigata followed by Vachellia farnesiana and Ebenopsis ebano. The three species are native belonging to the Fabaceae family and together they represent 44.05 % of the abundance and 63.71 % of the Urban Importance Value Index. According to the analysis of variance, the native species turned out to have higher values of richness, basal area, and crown area than the introduced species in the assessed localities.

https://doi.org/10.29298/rmcf.v14i79.1343

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